Plumbing fastener



FIG. 1 is a perspective view of a plumbing fastener showing our new design;

FIG. 2 is a front end view thereof;

FIG. 3 is an inner end view thereof;

FIG. 4 is a first side view thereof, the opposite side being a mirror image of the side shown; and

FIG. 5 is a second side view thereof, the opposite side being a mirror image of the side shown.

FIG. 6 is a perspective view of an alternative embodiment of a plumbing fastener showing our new design;

FIG. 7 is a front end view thereof;

FIG. 8 is an inner end view thereof;

FIG. 9 is a first side view thereof, the opposite side being a mirror image of the side shown; and,

FIG. 10 is a second side view thereof, the opposite side being a mirror image of the side shown.

The broken line showing in FIGS. 1 and 6 are for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a plumbing fastener, as shown and described. 